﻿// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
// Copyright (c) 2011, Dr. Masroor Ehsan
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of the author nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// $Author:$
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

using System;
using NodaTime;

namespace nodatest
{
    public static class NodaJoda
    {
        private static readonly DateTimeZone UtcZone = DateTimeZone.ForId(DateTimeZone.UtcId);
        private static readonly DateTimeZone BdZone = DateTimeZone.ForId("Asia/Dhaka");
        private static readonly DateTimeZone CaZone = DateTimeZone.ForId("America/Vancouver");
        private static readonly DateTimeZone SyZone = DateTimeZone.SystemDefault;

        public static DateTime FromUtc()
        {
            var dt = DateTime.Now;
            var nowInstant = Instant.FromDateTimeUtc(DateTime.UtcNow);
            var ldt = new LocalDateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, DateTime.Now.Hour,
                                        DateTime.Now.Minute);

            var uOff = UtcZone.GetOffsetFromUtc(nowInstant);
            var bOff = BdZone.GetOffsetFromUtc(nowInstant);
            var cOff = CaZone.GetOffsetFromUtc(nowInstant);
            var sOff = SyZone.GetOffsetFromUtc(nowInstant);

            var uInt = UtcZone.GetZoneInterval(nowInstant);
            var bInt = BdZone.GetZoneInterval(nowInstant);
            var cInt = CaZone.GetZoneInterval(nowInstant);
            var sInt = SyZone.GetZoneInterval(nowInstant);

            var udt = UtcZone.AtExactly(ldt);
            var bdt = BdZone.AtExactly(ldt);
            var cdt = CaZone.AtExactly(ldt);
            var sdt = SyZone.AtExactly(ldt);

            return bdt.ToDateTimeUtc();
        }
    }
}